i installed my new crower 63422P-2 Cams in my full build H22A.
we start degreeing the cams with the lobe center method.
peak lift intake @ 99° ATDC
peak lift exhaust @ 107° BTDC (103° Lobe seperation)
we set the intake gear +3,5 (gear mark) and the exhaust need +10° and that are too less
so we need to change the exhaust cam one tooth in running direction and after that we need to set the cam +7 (gear mark).
i am very amazed about that
gould that be?? so big deviation??
We turned the engine 15-20 rounds and every time the same result.

so we checked the valve lift @ TDC:
Intake have open 4,4mm – all 10° it opens more about 1,3mm
Exhaust have open 3,5mm – all 10° it closed about 1,0mm

and last: crower specification:
INTAKE
Opens: 29.0 BTDC
Closes: 47.0 ABDC
my result: opening start @ 42° BTDC; 29°BTDC is the 0,050 info from crower but we have 0,032 (8/10mm)
Close: @47.0 ABDC we also have 0,032 (8/10mm) and not 0,050

EXHAUST
Opens: 56.0 BBDC
Closes: 22.0 ATDC
closing have finished @ 35°ATDC; 21,5° BTDC is the 0,050 info from crower but we have 0,032 (8/10mm)
Close: @22.0 ATDC we also have 0,032 (8/10mm) and not 0,050

can anyone help me?
is that correct??

PIC:




thanks a lot for helping!!!!!

 

You need to degree the cams with the rockers locked.

 

I agree. It sounds like your only measuring the small lobes.
4.4mm for intake and 3.3 mm for exhaust is tiny...
Your vtec lobes should be about 3 times the lift your getting now..

 

thanks!

we loocked the rocker arm (one intake and one exhaust) and all specs are on the retainer/valve

the 4,4mm in and 3,5mm out is valve - overlapping @ TDC on VTEC profile

 

No, either Vtec is not locked or valve lash needs to be set to zero

 

VTEC was locked (one valve in and one valve ex on 1st cyl.)
valve lash was 0,006 in and 0,008 out
peak lift = peak lift -> equal with 0,000 or 0,006 valve lash -> there is no difference
or does i have an error is reason??

about BTDC,ABDC,.....
with 0 valve lash the lift rise in 0,006 and ex 0,008 -> so the final lift comes to ~ 0,040

maybe it is why the block is milled ??
the head is milled only 2-3/10mm but the block is milled much more

 

Ok, lets break this down.
What is the maximum valve lift on in/ex sides do you see?

 

thanks a lot!!!

ok we saw 12,5mm on in (99° ATDC) and ex (107°BTDC) on valve/retainer

 

always degree with zero valve lash

 

How much total was removed from the head and block?

 

block: about 0,035 (0,9mm)
head: about 0,001-0,002 (0,2-0,4mm)
total about: 1,1-1,3mm +/-

 

no more infos

 

1.3mm is a LOT of surface removal, I am not sure what the max is, but this might be close. Now while this is definite contributing factor, it is the spread between IN and EX final numbers that does not add up.
If you are saying that you needed 10 + on EXH and then had to skip a tooth on the timing belt, and ended up with another +7. That does sound like a lot. How many teeth on your cam gears? How many degrees is one tooth on your gears? If it is around 10.5 deg than you'd be looking at 17.5 in total and that sounds like a lot. Is there any damage anywhere? Anything iffy that you know of already?

If both intake and exhaust are closer, than I would understand this better (and it might be explained by decking and milling), but if they are so far apart (intake/Exh), are you sure you have correct cams are they mixed up possibly? Are your readings coming out exactly what cam spec calls for?

Anyway, something is strange there.

Are you sure that you were correct first time around, maybe now you are where you need to be on the exhaust and so you are actually 7 deg advanced now, but on the right tooth? This would make sense to me, as your cam gear markings will not line up at all with 1.3mm surface removal if that is what you are using for reference. If your gears have these markings I would expect exhaust mark to point to 3:30-4 clock and intake to 9:30-10 clock when you are timed right on the outside (non adjustable) part of your cam gears, and not 3 and 9 as would be normal.

In short I would check if you were a tooth off to begin with if everything else adds up.